. >> reporter: the fbi is convinced ciancia was targeting t tsa agents but they don't know why. >> we don't understand what his motives might have been. >> reporter: the trouble is they couldn't even ask him. he's still unconscious with a gone shot wound to the head. today the fbi combed through his apartment for clues and combed through his travel records to see if he ever had a run in with airport security. the last time he traveled abroad was 2006 when he took a trip to japan. today his family issued their first public statement. >> we like most americans are shocked and numbed by the tragic events of last friday. >> reporter: but offered no clues what could have prompted his spree. the tsa has a thankless job, enforcing procedures we all tolerate through gritted teeth. >> who else wants a job groping men, women and children all day. >> reporter: the agency embodies a federal government that's too invasive, corrupt and incompetent. today the u.s. attorney general took strong exception. >> no feelings about the government can possibly justify those kinds of actions. >> reporter: in